West Nile virus has emerged in recent years in temperate regions of Europe and North America, presenting a threat to public, equine, and animal health.

Uses interactive maps and graphs to show data about West Nile virus in Colorado. Data topics include West Nile virus for the latest year, traps and specimen results by year, county case count by year and county case count for all years.

The Map and Geographic Data Resource Library for the Colorado Department of Public Health and Environment. New maps are added to the blog as they become available.